Emergency breathing unit



FIG. 1 is a top and left side perspective view of an emergency breathingunit showing my new design;

FIG. 2 is a top and right side perspective view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a rear elevational view thereof.

The undisclosed bottom of emergency breathing unit is flat andunornamented.

The ornamental design for an emergency breathing unit, substantially asshown and described.